2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

basically all at once:

Old Apr 6, 2011 | 03:50 PM
  #1  
atsronnyats's Avatar
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GA basically all at once:

basically all at once:

no heater
no wipers
no acc to turn on radio

i have:
illumination all around
turn signals
hazards
defrost
headlights
headlamp motor fuction

fuses are a go...checked. even bought extras lol.

I had everything working fine after a routine radio swap. was able to diagnose the radio problem by jumping 12v+ into the radios ACC....press power button new radio comes on A OK. my problem seams to be within the ignition ACC curcuit before hand

IDEAS? these seam related?

88 fc3s vert 5sp
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Old Apr 6, 2011 | 08:08 PM
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Originally Posted by atsronnyats
basically all at once:
fuses are a go...checked. even bought extras lol.
Checked how? Eyeball test? Check again with a continuity tester, or one of those little fuse testers. Fuses can seem physically ok, but be no good. I've seen it.
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Old Apr 6, 2011 | 09:44 PM
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I forget if the wipers are too, but the rest is from the accessory circuit. If the fuses check out, I'd check your wiring. How about the clock? it is also on the accessory circuit.
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Old Apr 7, 2011 | 09:22 AM
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GA all but the blower motor

yes continuity function digital multimeter fuses are ok

so i found the problem with radio and the wipers. located just beyond the column there is a two wire connector (blk/red and blk i believe) this connector somehow became unplugged which is strange it must have been connected by a thread all it needed was a little help installing the radio was just that little bit it needed to become disconnected

now the blower switch is still not functioning

however the logicon is illuminationed (although not the indicator leds)
i checked the relay harness i do have a constant 12v @ the blue wire and one ground i cannot give better details than this and i did consult the fsm if you have a page # id be happy to answer your question. after turning the blower motor switch there was no change at the relay harness leading me to think its before the relay...after the fuse
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Old Apr 7, 2011 | 09:47 AM
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These might help: https://www.rx7club.com/showthread.p...heater+hailers

https://www.rx7club.com/showthread.p...heater+hailers
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Old Apr 7, 2011 | 10:41 AM
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Originally Posted by atsronnyats
so i found the problem with radio and the wipers. located just beyond the column there is a two wire connector (blk/red and blk i believe)
If this is the connector I'm thinking of, I've had a problem with it too. They are big, thick wires? If so, there is an identical connector in the same vicinity with different colored wires. Make sure they are going to the right ones. Might be something to check out.
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Old Apr 7, 2011 | 02:16 PM
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Does this cars engine run?
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Old Apr 8, 2011 | 05:27 PM
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GA

(hazard) yeah they are thick wires. ill look again in that area to make sure only thing is i didnt work in this area except to find out what happened lol i just put in a radio.

(hailers) yes it starts runs etc. workin fine just no blower motor function. btw this is my daily driver

the only thing that has not been restored since the"install" is the convertible 30A fuse.....thats it?
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Old Apr 8, 2011 | 05:36 PM
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The ignitoin switch has a pigtail. The pigtail is connected to the Front harness via three elect plugs.

The colors about to be mentioned are in the connector on the Front harness side..........the pure black wire in a connector with a black/white wire feeds the ignition switch.

When the ignition is turned to ON power passes from the black wire........thru the switch to the black/white wire and feeds a row of fuses in the interior fuse box.

When the ignition switch is turned to ON the power passes thru the switch to the Black/Red wire which in turn feeds a row of fuses in the interior fuse box.

When the ignition switch is turned to On or ACC the power passes from the black wire thru the igniton switch to the BLUE wire and from there on to the interior fuse box to feed a row of fuses on that box.

See the attached jpg for which row of fuses gets fed from what color wire at the ignition switch.
Attached Thumbnails basically all at once:-feedingtime.jpg  
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Old Apr 8, 2011 | 05:47 PM
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Blower motor..........fed from a few fuses. One is on the top row of the interior fuse box. Way up at the top a 30a fuse ..either the one on the top left or top right.

Also needs the wiper fuse to work. So if the wipers work then that fuse is good and no need to look.

Also the Cigar fuse has to be good. That fuse is on the ACC bus in the interior and is fed by the pure BLUE wire at the ignitoin switch. So your problem might be with that blue wire not feeding the lowest row of fuses in the interior fuse box.

EDIT: Look at the fuse box I attached in the other post I made and you can see the 30a fuse on the top row and it's called HEATER. BUT you need the other two fuses to also work for the heater blower motor to go go.
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Old Apr 14, 2011 | 12:16 AM
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vert are always diferent...

the fuse listed "soft top" 30 amp fixed it
thanx for all the input couldn't see this in the diagrams
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